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https://issues.apache.org/jira/browse/HBASE-2450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857476#action_12857476
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Karthik Ranganathan commented on HBASE-2450:
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The reason that we might miss the delete is because the minor compactions do
not respect deletes. Would it be worthwhile investigating if the minor
compactions can process the deletes but leave the delete tombstone till the
major compactions?
On a broader note, it seems to me that the design and the code will get a lot
simpler if we can maintain only one compaction path (except for minors leaving
behind some tombstones). Jonathan told me this was done to make the minor
compactions more efficient - do we have an idea on how much we gain with this
optimization?
> For single row reads of specific columns, seek to the first column in HFiles
> rather than start of row
> -----------------------------------------------------------------------------------------------------
>
> Key: HBASE-2450
> URL: https://issues.apache.org/jira/browse/HBASE-2450
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: io, regionserver
> Reporter: Jonathan Gray
> Fix For: 0.20.5, 0.21.0
>
>
> Currently we will always seek to the start of a row. If we are getting
> specific columns, we should seek to the first column in that row.
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